CVEvulnerability

CVE-2026-118660

8.6 HIGH Published 2026-10-28 Modified 2026-10-29 Official page ↗
Status
Awaiting Analysis
Published
2026-10-28
Last modified
2026-10-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-918

Description

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Prior to 21.0.0, Happy DOM loads iframe src URLs and link rel="stylesheet" href URLs by default while parsing untrusted HTML on the server because disableIframePageLoading and disableCSSFileLoading default to false. An attacker who controls parsed HTML can therefore cause server-side requests to arbitrary internal or cloud endpoints without an application opt-in and may expose confidential responses or credentials returned by those endpoints. This issue is fixed in version 21.0.0.

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References